assertion  retraction  graph  subject    predicate    object                                                                                       datatype    annotation
1          0           graph  DOID:4001  IAO:0000115  An ovarian cancer that has_material_basis_in epithelial tissue and is located_in the ovary.  xsd:string  "{""dce:type"":[{""datatype"":""_IRI"",""meta"":""owl:Axiom"",""object"":""obo:ECO_0007637""}],""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.cancer.gov/types/ovarian""}]}"